| Sr. No. |
Characteristics |
Requirement to |
| Grade A |
Grade B |
| 01 |
Appearance |
Anhydrous, white powder, odourless, bitter saline test |
Anhydrous, white powder, odourless, bitter saline test |
| 02 |
Solubility |
Soluble in water and glycerol, insoluble in alcohol |
Soluble in water and glycerol, insoluble in alcohol |
| 03 |
Density |
1.385 |
1.385 |
| 04 |
Sodium Sulphate (as Na2SO4) per cent by mass (on dry basis) |
99.0 % min. |
98.0 % min. |
| 05 |
Matter insoluble in water per cent by mass |
0.25 % max. |
0.50 % max. |
| 06 |
Chloride (as NaCl) per cent by mass |
0.30 % max. |
2.00 % max. |
| 07 |
Iron (as Fe) per cent by mass |
0.002 % max. |
0.002 % max. |
| 08 |
Loss on drying per cent by mass
|
0.5 % max. |
1.0 % max. |
| 09 |
pH of 10 % solution |
7.0 to 7.5 |
7.5 to 8.0 |
Note :- The product can also be supplied as per specifications provided by the client’s
Packing & Marking :- As per client’s requirements. |
